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Created July 22, 2011 05:58
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isPrimeNumber (using RegExp)
function(
a // the number
){
return !/^,?$|^(,,+)\1+$/.test(
Array( // repeat the string ','
-~a // coerce to integer
)
)
}
function(a){return!/^,?$|^(,,+)\1+$/.test(Array(-~a))}
DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
Version 2, December 2004
Copyright (C) 2011 YOUR_NAME_HERE <YOUR_URL_HERE>
Everyone is permitted to copy and distribute verbatim or modified
copies of this license document, and changing it is allowed as long
as the name is changed.
DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
0. You just DO WHAT THE FUCK YOU WANT TO.
{
"name": "isPrimeNumber",
"description": "Check if a number is prime with RegExp",
"keywords": [
"isPrimeNumber",
"RegExp",
"Prime"
]
}
<!DOCTYPE html>
<title>isPrimeNumber</title>
<div>Expected value: <b>true</b></div>
<div>Actual value: <b id="ret"></b></div>
<script>
var myFunction = function(a){return!/^,?$|^(,,+)\1+$/.test(Array(-~a))};
document.getElementById( "ret" ).innerHTML = myFunction(541)
</script>
@Kambfhase
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All solutions have an exponential complexity of O(d^n)

I'd like to see a prove for that.

OK, guys. stop wasting your time now and get sane. An End to Negativity!

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